P. Vladigerov
Tzar Kaloyan Opera, Act III, Scene I
Aleksandar Vladigerov, Sabin Markov, Reni Penkova, Sofia National Opera Orchestra, Maria Ventsislavova
Tsar Kaloyan, Act III, Scena II
Sabin Markov, Maria Ventsislavova, Boris Bogdanov, Reni Penkova, Lyuben Mihailov, Boyan Katsarski, Zhivko Pranchev, Sofia National Opera Chorus, Alexander Vladigerov, Sofia National Opera Orchestra, Milen Paounov, Evgenia Babacheva